A type of fracture that is localied near to a a tendon or ligament and a small fragment of bone is separated from the main mass of bone as a result of physical trauma.

(fractures, avulsion) Tearing away of the CORTICAL BONE fragment at the location of a strong ligament or tendon attachment. The bone fragment detachment site often occurs near a soft site (e.g., GROWTH PLATE) at the base where LIGAMENTS; TENDONS; or JOINT CAPSULES attach. In younger patients it is most often caused by a sudden forceful pull on a tendon in the opposite direction of the bone movement. In the elderly it is associated with osteoporotic INSUFFICIENCY FRACTURES.